Valve.



YR. T. CRANE.

VALVE.

APPLICATION FILED JUNE 17, 1909.

Patented Aug. 6, 1912.

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mortem) TELLER CRANE,eremoaofrrmos f'ass'mivon neonates `centranr, 'or

' omesso, rmginors, A coarona'rIeN-or manners VALVE.

Specification of Letters Patent.

Patented Ang'. QVLZ.

L.Applica-tienfletwl'lllle 17, 4Serial 80.45%;750.

- cago, in the county of Cook and .State of Illinois, have invented certain/new and use-'A ful Improvements in Valves, of which the following is a specification.`

The invention relates to valves and particularly to the type known as quick-openlng- Aradiator valves. It has for its principal 'ob-1 jects; the provision ofa valve havingan improved and simplified form of connection between the valve stem and disk; the provi-4 sion of a construction wherein the valve stem `is made in a single piece and wherein the parts may be readily assembled; and the provision of an improved yielding connection between the stem and disk for maintaining the valve tightly closed regardless of any contraction of the stem or other parts of the valve. One embodiment of the invention is illustrated in the accompanying drawings, wherein Figure 1 is a longitudinal section thrugh a valve embodying the invention,

Figure 2 is a longitudinal section through the valve bonnet, Figures 3 and 4' are detail views of the valve stem, Figure 3 being a side elevation partly broken away, and Figure 4 being a section on the line IV-IV of Figure 3, and 'Figures 5 and 6 are detail plan View and section through the thimble respectively.

Referring first to the general arrangement of parts as shown in Figure 1, the principal parts may be enumerated as follows. 1 is the valve body; 2 is the bonnet screw threaded to the body in the manner illustrated; 3 isthe valve stem provided at its upper end with the handle 4; 5 is the packing seated ina recess in the upper end of the bonnet; 6 is the cap screw threaded upon the upper end of the bonnet; 7 is the spring for maintaining the packing tightly pressed in its recess about the stem, which spring carries at its lower end a brass follower ring 8; 9 is the valve disk recessed upon its lower side for the reception of the composition disk 10; 11 is a thimble screw threaded into the upper side of .the valve disk and adapted -to maintain the stem in position; and 12' is the spring interposed between the stem and The -valve stem is made in one-piece and 'is provided intermediate its ends with the the spring: As the stem is made in one piece' and is provided with lthe projections or wings 13 and the head 16, the thimble l1 must be applied laterally over the stem, and to this end a passage or opening i8 Fig. 5) just sufficient to pass over the stem above the enlargement 15 is provided. After the thimble is slipped over this portion of the stem, it is moved downwardly over the en'- larged portion 15 and screw threaded into the valve disk as indicatedin Figure 1. The fit between the thimble and the enlarged portion 15 of the stem is such as toprevent any lateral movement of the stein with respect to-the thimble. There is a slight amount of lost motion between the head 16 and the lower end of the thimble 11, and the spring 12 is positioned under a certain-amount of compression, so that after the valve is screwed down tight upon its seat it will remain in thispositionre ardlcss of'any subsequent contraction o the stem or composition disk, the springcausing the disk to move downward with respect to the stem as such contraction takes place.l

The composition disk is held in position by means of the usual nut 19 screw threaded upon the projecting stud at the lower side of the disk. It will be seen from the foregoing that the use of the cut-away thimble permits the use of an integral one-piece stem, and that the parts may be readily assembled without removing the stem from the bonnet. It. will also be seen that the means for maintaining a tight joint between the .valve disk and its seat is a simple and efficient one, and that the parts when assembled are securely held in position.

Having thus described my invention and illust-rated its use, what I claim as new and desire to secureby Letters Patent is the fol-- lowing In combination in a valve, a-dis r provided upon its upper surface with a spring receiving opening and a collar, a valve stem havingr at its lower end a. head fitting inside the In testimony T 'whereof I have hereunto collar and provided with a [sp1-ing receiving Signed myname in the. presence of two subopening in line with the opening 1n the disk, s'cribed Witnesses.

a thimble screw threaded into the collar for RICHARD TELLER' CRANE. 5 nmintaining the head of t-he stem in the col- I'Vtnesses:

lar and a coil spring mounted in the oppos- W. E. PETERSON,

ing openings in the stem and disk. F. T. DoNoHUE.

Coplas :l this patent may be obtained for ve cents each, by addressing the Commissioner ot' Patents, Washington, D. C. 

